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Use ptid_t.tid to store thread ids instead of ptid_t.pid.

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* gnu-nat.c (inf_validate_procs): If this is the first time we're
	seeing a thread id, extend the main thread's ptid.  If we still
	have pending execs, don't be verbose about new threads.
	(gnu_wait, gnu_resume, gnu_attach, gnu_thread_alive)
	(gnu_pid_to_str, cur_thread, sig_thread_cmd): Adjust.
	* i386gnu-nat.c (gnu_fetch_registers, gnu_store_registers):
	Adjust.
This commit is contained in:
Pedro Alves 2008-09-08 21:33:25 +00:00
parent 2689673f45
commit 617fd3b510
3 changed files with 80 additions and 34 deletions
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12
gdb/ChangeLog
View File

@ -1,3 +1,15 @@
2008-09-08 Pedro Alves <pedro@codesourcery.com>
Use ptid_t.tid to store thread ids instead of ptid_t.pid.
* gnu-nat.c (inf_validate_procs): If this is the first time we're
seeing a thread id, extend the main thread's ptid. If we still
have pending execs, don't be verbose about new threads.
(gnu_wait, gnu_resume, gnu_attach, gnu_thread_alive)
(gnu_pid_to_str, cur_thread, sig_thread_cmd): Adjust.
* i386gnu-nat.c (gnu_fetch_registers, gnu_store_registers):
Adjust.
2008-09-08 Pedro Alves <pedro@codesourcery.com>
* procfs.c (to_attach): Create a procinfo for the current lwp.

88
gdb/gnu-nat.c
View File

@ -1066,6 +1066,8 @@ inf_validate_procs (struct inf *inf)
else
/* THREADS[I] is a thread we don't know about yet! */
{
ptid_t ptid;
thread = make_proc (inf, threads[i], next_thread_id++);
if (last)
last->next = thread;
@ -1073,7 +1075,20 @@ inf_validate_procs (struct inf *inf)
inf->threads = thread;
last = thread;
proc_debug (thread, "new thread: %d", threads[i]);
add_thread (pid_to_ptid (thread->tid)); /* Tell GDB's generic thread code. */
ptid = ptid_build (inf->pid, 0, thread->tid);
/* Tell GDB's generic thread code. */
if (ptid_equal (inferior_ptid, pid_to_ptid (inf->pid)))
/* This is the first time we're hearing about thread
ids, after a fork-child. */
thread_change_ptid (inferior_ptid, ptid);
else if (inf->pending_execs != 0)
/* This is a shell thread. */
add_thread_silent (ptid);
else
add_thread (ptid);
}
}
@ -1418,7 +1433,7 @@ struct inf *waiting_inf;
/* Wait for something to happen in the inferior, returning what in STATUS. */
static ptid_t
gnu_wait (ptid_t tid, struct target_waitstatus *status)
gnu_wait (ptid_t ptid, struct target_waitstatus *status)
{
struct msg
{
@ -1449,7 +1464,7 @@ gnu_wait (ptid_t tid, struct target_waitstatus *status)
waiting_inf = inf;
inf_debug (inf, "waiting for: %d", PIDGET (tid));
inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid));
rewait:
if (proc_wait_pid != inf->pid && !inf->no_wait)
@ -1585,20 +1600,24 @@ rewait:
thread = inf->wait.thread;
if (thread)
tid = pid_to_ptid (thread->tid);
ptid = ptid_build (inf->pid, 0, thread->tid);
else if (ptid_equal (ptid, minus_one_ptid))
thread = inf_tid_to_thread (inf, -1);
else
thread = inf_tid_to_thread (inf, PIDGET (tid));
thread = inf_tid_to_thread (inf, ptid_get_tid (ptid));
if (!thread || thread->port == MACH_PORT_NULL)
{
/* TID is dead; try and find a new thread. */
if (inf_update_procs (inf) && inf->threads)
tid = pid_to_ptid (inf->threads->tid); /* The first available thread. */
ptid = ptid_build (inf->pid, 0, inf->threads->tid); /* The first available thread. */
else
tid = inferior_ptid; /* let wait_for_inferior handle exit case */
ptid = inferior_ptid; /* let wait_for_inferior handle exit case */
}
if (thread && PIDGET (tid) >= 0 && status->kind != TARGET_WAITKIND_SPURIOUS
if (thread
&& !ptid_equal (ptid, minus_one_ptid)
&& status->kind != TARGET_WAITKIND_SPURIOUS
&& inf->pause_sc == 0 && thread->pause_sc == 0)
/* If something actually happened to THREAD, make sure we
suspend it. */
@ -1607,7 +1626,8 @@ rewait:
inf_update_suspends (inf);
}
inf_debug (inf, "returning tid = %d, status = %s (%d)", PIDGET (tid),
inf_debug (inf, "returning ptid = %s, status = %s (%d)",
target_pid_to_str (ptid),
status->kind == TARGET_WAITKIND_EXITED ? "EXITED"
: status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED"
: status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED"
@ -1616,7 +1636,7 @@ rewait:
: "?",
status->value.integer);
return tid;
return ptid;
}
@ -1934,12 +1954,14 @@ port_msgs_queued (mach_port_t port)
in multiple events returned by wait).
*/
static void
gnu_resume (ptid_t tid, int step, enum target_signal sig)
gnu_resume (ptid_t ptid, int step, enum target_signal sig)
{
struct proc *step_thread = 0;
int resume_all;
struct inf *inf = current_inferior;
inf_debug (inf, "tid = %d, step = %d, sig = %d", PIDGET (tid), step, sig);
inf_debug (inf, "ptid = %s, step = %d, sig = %d",
target_pid_to_str (ptid), step, sig);
inf_validate_procinfo (inf);
@ -1967,30 +1989,35 @@ gnu_resume (ptid_t tid, int step, enum target_signal sig)
inf_update_procs (inf);
if (PIDGET (tid) < 0)
/* A specific PTID means `step only this process id'. */
resume_all = ptid_equal (ptid, minus_one_ptid);
if (resume_all)
/* Allow all threads to run, except perhaps single-stepping one. */
{
inf_debug (inf, "running all threads; tid = %d", PIDGET (inferior_ptid));
tid = inferior_ptid; /* What to step. */
ptid = inferior_ptid; /* What to step. */
inf_set_threads_resume_sc (inf, 0, 1);
}
else
/* Just allow a single thread to run. */
{
struct proc *thread = inf_tid_to_thread (inf, PIDGET (tid));
struct proc *thread = inf_tid_to_thread (inf, ptid_get_tid (ptid));
if (!thread)
error (_("Can't run single thread id %d: no such thread!"), inf->pid);
inf_debug (inf, "running one thread: %d/%d", inf->pid, thread->tid);
error (_("Can't run single thread id %s: no such thread!"),
target_pid_to_str (ptid));
inf_debug (inf, "running one thread: %s", target_pid_to_str (ptid));
inf_set_threads_resume_sc (inf, thread, 0);
}
if (step)
{
step_thread = inf_tid_to_thread (inf, PIDGET (tid));
step_thread = inf_tid_to_thread (inf, ptid_get_tid (ptid));
if (!step_thread)
warning (_("Can't step thread id %d: no such thread."), PIDGET (tid));
warning (_("Can't step thread id %s: no such thread."),
target_pid_to_str (ptid));
else
inf_debug (inf, "stepping thread: %d/%d", inf->pid, step_thread->tid);
inf_debug (inf, "stepping thread: %s", target_pid_to_str (ptid));
}
if (step_thread != inf->step_thread)
inf_set_step_thread (inf, step_thread);
@ -2076,7 +2103,10 @@ gnu_create_inferior (char *exec_file, char *allargs, char **env,
/* Now let the child run again, knowing that it will stop immediately
because of the ptrace. */
inf_resume (inf);
inferior_ptid = pid_to_ptid (inf_pick_first_thread ());
/* We now have thread info. */
thread_change_ptid (inferior_ptid,
ptid_build (inf->pid, 0, inf_pick_first_thread ()));
startup_inferior (inf->pending_execs);
}
@ -2142,7 +2172,7 @@ gnu_attach (char *args, int from_tty)
inf_attach (inf, pid);
inf_update_procs (inf);
inferior_ptid = pid_to_ptid (inf_pick_first_thread ());
inferior_ptid = ptid_build (pid, 0, inf_pick_first_thread ());
attach_flag = 1;
push_target (&gnu_ops);
@ -2230,10 +2260,11 @@ gnu_pid_to_exec_file (int pid)
static int
gnu_thread_alive (ptid_t tid)
gnu_thread_alive (ptid_t ptid)
{
inf_update_procs (current_inferior);
return !!inf_tid_to_thread (current_inferior, PIDGET (tid));
return !!inf_tid_to_thread (current_inferior,
ptid_get_tid (ptid));
}
@ -2557,7 +2588,7 @@ proc_string (struct proc *proc)
sprintf (tid_str, "process %d", proc->inf->pid);
else
sprintf (tid_str, "Thread %d.%d",
proc->inf->pid, pid_to_thread_id (MERGEPID (proc->tid, 0)));
proc->inf->pid, proc->tid);
return tid_str;
}
@ -2565,7 +2596,7 @@ static char *
gnu_pid_to_str (ptid_t ptid)
{
struct inf *inf = current_inferior;
int tid = PIDGET (ptid);
int tid = ptid_get_tid (ptid);
struct proc *thread = inf_tid_to_thread (inf, tid);
if (thread)
@ -2706,7 +2737,8 @@ static struct proc *
cur_thread (void)
{
struct inf *inf = cur_inf ();
struct proc *thread = inf_tid_to_thread (inf, PIDGET (inferior_ptid));
struct proc *thread = inf_tid_to_thread (inf,
ptid_get_tid (inferior_ptid));
if (!thread)
error (_("No current thread."));
return thread;
@ -2888,7 +2920,7 @@ set_sig_thread_cmd (char *args, int from_tty)
inf->signal_thread = 0;
else
{
int tid = PIDGET (thread_id_to_pid (atoi (args)));
int tid = ptid_get_tid (thread_id_to_pid (atoi (args)));
if (tid < 0)
error (_("Thread ID %s not known. Use the \"info threads\" command to\n"
"see the IDs of currently known threads."), args);

14
gdb/i386gnu-nat.c
View File

@ -118,10 +118,11 @@ gnu_fetch_registers (struct regcache *regcache, int regno)
/* Make sure we know about new threads. */
inf_update_procs (current_inferior);
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
thread = inf_tid_to_thread (current_inferior,
ptid_get_tid (inferior_ptid));
if (!thread)
error (_("Can't fetch registers from thread %d: No such thread"),
PIDGET (inferior_ptid));
error (_("Can't fetch registers from thread %s: No such thread"),
target_pid_to_str (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{
@ -209,10 +210,11 @@ gnu_store_registers (struct regcache *regcache, int regno)
/* Make sure we know about new threads. */
inf_update_procs (current_inferior);
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
thread = inf_tid_to_thread (current_inferior,
ptid_get_tid (inferior_ptid));
if (!thread)
error (_("Couldn't store registers into thread %d: No such thread"),
PIDGET (inferior_ptid));
error (_("Couldn't store registers into thread %s: No such thread"),
target_pid_to_str (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{